class_docstr: Base tokenizer class.
  Tokenizers implement tokenize, which should return a Tokens class.
code: def __del__(self):
      self.shutdown()
  
imports: import copy
  import logging
  import regex
  import spacy
label_desc: Use image node_id 3 for calling the Tokenizer obj's underlying member method code with example usage: obj.__del__() without return types